Cap for containers



Jan. 19, 1932.

E. FL BORRO .CAP FOR CONTAINERS Filed May 12, 1931 INVENTOR EDWARD F BORRO yhz's azlaflne ys flit ill

Patented Jan. 19, 1932 Umrsn sures tenant Parana orrice, I

co, or warns, new anneal, a coaroaarron or new Jansen EDWARD F. BOBRO, or ro'rowa nonouon, NEW Jamar, assrenon' ro when isotonic one nor) oonrarnans Application filed May 12,

. This invention relates to caps or closures for containers, such as are usually provided for holding powders, such as talcum powders, etc, for the retail trade, and more particularly to caps for such containers which.

are molded of suitable compositions as phenolic condensation products, etc. (lontainers such as described are usually formed ly, and it is also an olgect of this invention to provide an improve molded cap for containers which can he; fitted to containers without cracking.

la the drawings-' Figure l is a view in elevation of a container provided with a cap constructed in accordance with this invention, part of the cap and container neck heing hrolren away to show the relation thereof more closely;

Figure 2 is a view similar to Figure l hut tallten suhstantially at right angles thereto;

and

Figure 3 is a section on line 33 oi Figure 1,

ln the drawings a cap 1 is constructed in accordance with this invention is shown in connection with a container having a neclr l which is usually closed at its outer endh Y a perforated wall d. @wing to the unavoi ahle inaccuracies oi manufacture the diametors of the nechs l oi diderent containers dider slightly from the designed diameter. Where molded caps of the designed diameter are applied to such containers the irregularities in the diameters of the container neclrs cause some oi the caps to he crached' as they are forced onto the container neclr. owin to the lack of elasticity of the material orming the cap which does not permit rear. serial no, name of a suficient stretchin of the cap. To overcome this objection t 1e cap 1 is molded with its wall or flange 8 inclosing an oval or elliptical opening with its shorter axis ll of the length of the designed diameter of the container nech it is to fit and its longer axis slightly larger. As thus shaped the cap is round to possess suficient elasticity to ermit of it heing applied to container me which vary within fairly wide tolerances without danger oil cracking.

in applying the cap to the container neck the cap is distorted changing the shape of the opening slightly but the compositions have sullicient elasticity to permit of this distortion when, as shown in Figure 3, there is a small clearance left between the cap and the container neck on the longer axis of the cap and the cap tlan c is not subjected to great tension. lhe distortion, while slight, is suficient to permit the application of? the till elasticity of the material or which the cap a i is made is sullicient to hind the cap in position. r The en aging surfaces of hoth the corn tainer use and cap are even or plain, without engaging recesses or projections and the cap-is retained in position solelyloy the triotional engagement of the contacting surfaces. The engagement between the cap and the container is such that the cap is retained in position on the container under ordinary handling hot is readily removed or applied.

ll claim l. The combination with a container hav-- in a discharge spout with an even cylindrica outer surlace of a cap therefore formed of a phenolic condensation compound and having a flange with a continuous even inner surface storming an oval opening when disengaged from the spout, said cap heing retained on said spout'rhy the frictional engagement of said surfaces, v r g 2, llhe combination with a container hav in a diechar spout with an even cylindri ca enter our ace of a cap therefore termed out a phenolic condensation compound and having a flange witha continuous even inner surface forming-an oval opening when dis- I engaged from the spout and -B8Id spout to retainsaid cap on salds out bx frictional engagement of said sur aces w storted by en applied thereto. 8. The combination with a contamerhaving a discharge spout with a continuous even indrical outer surface of a cap of a henolic condensation compound therefor avmg a flange wlth an even inner surface forming an oval opening when disengaged from the spout an distorted b said spout to retain said cap on said spout ii engagement of said surfaces when applied thereto.

\ 4. In a cap of a molded phenolic condensation compound for a container having a discharge spout with an even cylindrical outer surface, a flange having a continuous even inner surface end forming an oval opening to receive said discharge s out, the s orter axis of the oval opening 0 the cap \beingsubstantially the length of the diameter of the discharge spout.

.5. In a cap of a phenolic condensation compound for a container having a discharge spout with an even'cylindrical outer surface, a flange having a continuous even inner surface and forinlng an oval o ning,

said opening being distorted when t e ca 4 is in position on the discharge spout an said surfaces retammg sald cap 1n posltlon by frictional engagement.

- 6. In a cap 'of -a phenolic condensation compound for, a container having adischargespoutwith an even cylindrical outer surface, a flangefhavi'nga continuous even inner surface ard forming an oval opening 7 to receive said ischarge spout. In testimony whereof EDWARD F. BORRO.

y frictional 3 have signed my; I name to this specification. 

